Improvement in universal shaft-couplings



UNITED STATES PATENT OFFICE.

AMOSES A. KELLER, 0F LITTLESTOWN. PENNSYLVANIA.

IMPROVEMENT IN UNIVERSAL SHAFTi-COUP-LINGS.

thesaine, reference being'had to the accompanying drawing forming part of this speci1i cation. t

This invention relates to improvements in universal coupling-joints for shafts, and consists in a concave socket in the end of one section, with a short cylindrical extension, and a ball on the other fitting the socket, and securedto the socketed sectionV by a pin or bolt fixed in the shell of lthe socketed section, and passing transversely through a bolt in the ball, and traversing its axis perpendicular to a slot formed in the ball for the pin of the sock eted section, all as hereinafter more fully specified. d Y Y, y

Figure 1 is a longitudinal section of my improved couplingfjoint, and Fig. 2 is a transverse lsection taken on the line a; of Fig. 1.

Similar letters of reference indicate crresponding parts.

A is the socketed section, which has a socket which is a true hollow hemisphere and a cylindrical extension beyond the line m. B is the spherical section which fits the socket, and has a deep slot, into which a pin or bolt, G, fixed in theshell A on the line :r .'r, works. E isa larger boltpassing through the axis of the ball perpendicular'to the slot, and through which the bolt C passes. vThis bolt is kept in i specification forming part of Letters Patent No. 105,696, dated July 26, 1870.

positionby the walls of the shell A, and the ball oscillates on it. The said ball also oscillates on the axis of the piu G, and thus has the necessary universal motion. The two bolts hold the sections in connection.

I do not claim a new universal shaft-coupling, since I am aware that such a claim would necessitate the production oi' a coupling operating upon a new principle, or exhibiting a new mode ,of operation, but my invention is simply an improvement upon an old mana facture. Y

The object which I have in view is to introduce to the public a closed joint, so constructed that it will not lack any of the required lexibility. A- law prevails in many of the States which compels manufacturers to box their shaft-joints, to avoid danger. I propose to remedy this difficulty and do away entirely with the necessity for boxing by closing the joint.

`What, therefore, I esteem as my invention, and desire to protect by Letters Patent, is-

lllhe hemisphericallyY-socketed shaft-piece A, having extension -lips over its diametrical 1 plane, and the slotted spherical shaft-section B, combined with diametrical bolts G E, placed at right angles to veach other, the former fast to the socket A and passing through the lat ter, all as and for the purpose described.

The above specification of my invention signed by me this 29thday of March, 1870.

MOSES A. KELLER.

Witnesses: GEo. W. MABEE, ALEx. F. ROBERTS. 

